发明人黄志刚,钱学锋,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115098949 A, 授权公告日 2025-10-02.
发明人高志强,李文辉,张德明. "Method for the Synthesis of 1-[1-(3,4-difluorophenyl)-4-(4-methoxyanilino)-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl]-4-methylpyridinium chloride" [P]. 中国发明专利, 专利号 CN 109620168 A, 授权公告日 2022-11-13.
发明人沈红梅,陈志强,张德明. "A Process for Preparing High-Purity 1-[1-(3,4-difluorophenyl)-4-(4-methoxyanilino)-2,5-dioxo-2,5-dihydro-1H-pyrrol-3-yl]-4-methylpyridinium chloride" [P]. 中国发明专利, 专利号 CN 109385897 A, 授权公告日 2023-07-04.
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